Means for compressing springs to remove same from trucks



l 1.. MARTEL. MEANS FOR COMPRESSING SPRINGS T0 REMOVE SAME FROM TRUCKS.

` l APPLICATION FILED DEC-31| |919.

Fig-a.

Patented Nov. 15 1921.

h (Josep/2 M fiel.

UNH'ED STA'ES earner ortica.

JOSEPH MARTEL, OF IVONTREAL, QUEBEC, ftlhl'ADi.y

MEANS FOR COMPRESSING SPRINGS TO REMOVE SAME FRGM TRUCKS. Y

Speciicaton of Letters .'Eatent.

Application filed December 31, 1919. Serial No. 348,538.

T 0 all whom t may concern:

Be it known that I, Josnrrr MARTEL, of the city of Montreal, Province of Quebec, Dominion of Canada, a subject of the King of Great Britain, have invented certain new and useful improvements in Means for Compressing Springs to Remove Same from Trucks; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates particularly to the removal of the elliptic motion springs of trucks for the purposeof renewal or replacing the spring when they lose their temper or for renewing other parts of the truck where it is necessary to take out the spring. The object of my invention is to render the operation both `simple and safe while using in the main standard equipment. To this end the invention consists in combining with a jack such as is suitable for use in changing the brasses in journal boxes, for packing cars and other purposes, means for temporarily effecting connection between the jack and one of the sills of the truck in order that when the jack is operated with its opposite end in bearing relation with the bolster it will depress the latter relatively` to the sill and consequently compress the spring sufficiently to permit a buckle to be slipped over it in its compressed condition ready for removal upon release of the jack.

F or full comprehension, however, of my invention, reference must be had to the accompanying drawings in which similar reference characters indicate the same parts, and wherein:

Figure l is an elevation illustrating a portion of a truck with my invention applied thereto;

Fig. 2 is a side elevation showing the as sociated parts-in section and the jack removed;

Fig. 3 is a plan view thereof;

Fig. 4 is a fragmentary View showing the buckle ir position after the springs are depressed;

.Fig 5 is a perspective view of the buckle;

Fig. 6 is a perspective view of the rest; and

plate. I

The side sill of the truck is indicated at b and the spring to be removed at c, the bolster at fl, the cast iron block for positioning the bolster relatively to the spring beretaining plate n.

Fig. is a perspective of the retaining Ving indicated at e.V These parts are well known and need not be described in detail as they may be members of any type of truck.

The preferred embodiment of my invention comprises a stirrup, a stirrup retainer and a rest for the cross `head while being assembled.

rlhe stirrup consists ofv a cross head consisting ofa central bearing it preferably of substantially circular `form and having lateral arms g with shoulders g1 at their ends, and of sufficient length to extend beyond the opposite sides of the bolster. rllhis cross head carries a pair of stirrups z' in the form of flat hooks with slotted upper ends j and the hooks extending inwardly as at lc,

rt-tenten Nev. 15, i921. f

relatively to the truck, while the outer edge I is preferably extending a short distance below the bottom of the hook as at m to extend the guiding faces. These stirrups are guided.

into the holes in the ends of the bolster and usually provided for fastening the side bearings. The side bearingsare always removed before any attempt is made to compress the spring, thus making these holes available for my safety pins. 1

In order to compress the spring according to my invention it is necessary to expand the space between the cross head 7L and the To perform this function l `employ a lifting jack of suitable dimensions and capacity, preferably a fifteen ton jack. The jack l have illustrated consists of a cylinder u with vpiston n and ratchet lever fw, the cylinder being usually cast with a circular base ad'.

ln order to facilitate assembling'the memn bers of my compressor to enable it 'to lbe operated by a man or a boy-l Vprovide a rest consisting of an angular plate the lower leg 2 of which is hooked as at 3 to engage the 'gusset plate blof the sill and the upper leg h These, safety pins are inserted through this plate lOO et receives and supports the cross head while l the stirrups are being suspended from it;

while the vertical leg 5 is of sutlicient height rio' ation as their length should be suiiicient to Y have their hooks 7c engage beneath the side sill while suspended from the cross head and the cross head rests on the plunger or piston of the jack. In order to retain the spring in compressed condition a collar lO isfeinployed. I 'Y Assembly. y

In assembling my. spring-compressor the rest 2-3*4 is hooked to the gusset plate and the'cross head is' placed upon it, after which the stirrups i' are hung on the ends of the cross heads andthe hook ends 7c are engaged beneathv the sill b. TheL retaining plate n is then set on the end of the bolster where it is retained against displacement by safety pins t, the slots p engaging the, stirrups and preventing displacement Vthereof from their Y positions engaging the sills. The jack is then placed on the retaining plate n with its piston in line with the mouth of the cross head-rest.

Operation.

In the operation lof my spring-compressor the ratchet lever 'w is operated to cause the piston to rise and engage the cross head andL as the operation is continued the abutment presented by' the cross-head vthrough the stirrups and the sill of the truck causes the Vend of the bolster to be Vdepressed and the springto be compressed. VWhen the spring has been compressed to a suiicient degree,A

the collar 10 is slipped over it after which the jack is contracted and removed, thus Y releasing the cross head, stirrups and retain-V ing plateand permitting the equipment to be y'moved tothe opposite end of theV bolster.

. Vhen the `spring is compressed and beforeV thejack is contracted a. key 20 is inserted in the front of the collar and between the sec- Y tions of the spring and held by a split Cotter ,21. This prevents the collar being sprung ofi' the spriiigpwhen the jack releases Ithe l latter.

The jack illustrated is one well known the railroads but other lacks of suitable dimensions and capacity may be employed, and other means may be employed for trans mittingfthe force of the jack to the springl y while utilizing Vthe sill or other relatively lixed part of the truck, as the abutment y move same from trucks consisting of means .act as a strut betweeny the' said means and detachably engaging a fixed part of the truck, and an expansile device adapted to the spring to be removed whereby the latter i islcompressed when' thedevice is expanded.

'2. Means for compressing springs to remove same from trucks having a displace-V vsamev uponthe end .of theibolster, a jack Vbear- Vthe cross head and part of the truck for Y the purpose of alining the cross head with the truck members bearing upon the spring,

y and` aY compression device constructedfand arranged t0 bear between the cross head and l l' the said displaceable member.

3. In means for cciiipressing an elliptic spring to remove same from a truck having a bolster upon Vwhich the spring acts, and a side sill, the combination with a jack adapt-- ed to be set upon one end of the bolster, ysaid jack including a. piston, a cross :head resting upon the piston of the jack, a pair of hooked stirrupshaving one end hooked for engagement with the sill and the other end slotted to engage the cross head, Y f

4. In means for compressing.f an elliptic spring to remove same from a truck having aV bolster upon which the spring. acts, and a side sill, the combination with aretaining plate and means detachably fastening the ing upon the retainingplate, saidjack including a piston, across head bearing uponV the pistonv of the jack, a pair of stirrups slid! ably engagedand retained iii working positionby the retaining plate and having one end hooked for engagement with the end side of the sill and the other end'slotted torengagement with the crossv head. f j 5. In means for Ycompressing.an elliptic springto reinove'same Jfrom a truck having a bolster upon,whichrthespring acts, and aA side sill,v vthe combination with a retaining" plate and means detachably iasteningthe sanieupon the yend of the` bolster,gajack bearing upon the retaining plate, said jack including a piston, a cross head bearing'upon thepiston oi the jack, a pair of stirrups slidably engaged and retained in working` position by the retaining plate and having one end hooked `for engagement with the end `side of thesill and the other end ,slotted for engagement with thecross head, and a inem ber for supporting the cross headl while assembling.

6. In means for compressing an elliptic spring to removesam'e ironia truck having a bolster uponwhich the spring acts,.and a l side sill, the combination with a retaining plate and means detachably fastening the same ,upon the end of the bolster, a. jack bear- Yreo ing upon the retaining plate, said jack including a piston, a cross head bearing upon the piston oi the'` j ack, a pair of stirrupsslid* ably engaged and retained in working position bythe retaining plate and having on'e125 end' hooked for engagement with the underside of the vsill and theotherA end slotted `for engagement with the cross head,` and a member for supporting the cross-head while' l assembling, 'and consisting of an angular 130 plate, one leg of which detaehably engages the truck and another leg serves as a rest for the cross hea-d.

7. Means for compressing springs to remove same from trucks, a. cross-head and tension device tying the cross-head to a.` part of the truck in position alining the crosshead With the truck members bearing upon the spring to be removed, a dsplaceable member adapted to bear upon the spring and in operative engagement with said device,

and a compression device bearing between the cross-head and the said displace-able member.

In testimony whereof have signed my 15 name to this speoicaton in the'presence of two Witnesses.

JOSEPH MARTEL.

Witnesses:

GORDON G. COOKE, WILLIAM J C. HEWETsoN. 

